Organic geochemical and petrographical characteristics of the Nagaur lignites, Western Rajasthan, India and their relevance to liquid hydrocarbon generation
作者： Alok Kumar Singh , Alok Kumar , Mohammed Hail Hakimi
DOI: 10.1007/S12517-018-3744-7
关键词: Source rock 、 Inertinite 、 Hydrocarbon 、 Organic matter 、 Maceral 、 Geochemistry 、 Liptinite 、 Moisture 、 Maturity (geology) 、 Chemistry 、 General Earth and Planetary Sciences 、 General Environmental Science
摘要: The article presents the geochemical and petrographical characteristics of Paleocene lignite deposits Nagaur Basin to appraise regional rank variation, organic matter maturity, liquid hydrocarbon generative potential. investigation indicated that analyzed lignites contain abundant huminite group macerals with a significant amount liptinite while concentration inertinite is less in comparison group. reflectance (%R0) indicates samples are thermally immature nature sub-bituminous B rank. Immaturity has influence on proximate results samples, especially moisture volatile low fixed carbon percentage. have TOC S2 values range from 30.4 43.0 58.0 130.7 mg HC/g rock, respectively, which shows these excellent generation potential make them industrially important, considering huge reserve study area region. Rock-Eval pyrolysis ultimate analysis also reveal mainly contained mixed type II–III kerogens for both gas generation. These dependable maceral composition was derived microscopic study. presence high (more than 15%) suggests can act as good source rock
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